The TurboTax online editions for tax year 2018 permanently closed after October 20, 2019. The TurboTax online editions for tax year 2019 are scheduled to be available on December 4.
To complete a 2018 tax return using TurboTax you would need to purchase, download and install on a personal computer, Win or Mac, one of the 2018 desktop editions from this website - https://turbotax.intuit.com/personal-taxes/past-years-products/
A 2018 tax return can only be printed and mailed, it cannot be e-filed.
